In-situ carbon coated carrollite spinel CuCo 2 S 4 nanoparticles were synthesized by a simple low temperature hydrothermal route and studied as anode for lithium battery applications. The electrochemical reaction with lithium involves initial insertion of 3Li/f.u into the lattice upto 1.5&nbsp;V followed by conversion reaction upto 0.01&nbsp;V. A reversible capacity of 180&nbsp;mAh&nbsp;g −1 was obtained for CuCo 2 S 4 after 30 cycles at C/5 rate (137&nbsp;mA&nbsp;g −1 ). However, in-situ carbon coated CuCo 2 S 4 shows significantly higher capacity of 375&nbsp;mAh&nbsp;g −1 even after 30 cycles. © 2016

Kothandaraman Ramanujam

Department Of Chemistry

Upadhyayula V Varadaraju

Rakesh Verma

Anodes

carbon

Cobalt compounds

Copper compounds

Indium compounds

Lithium compounds

Lithium-ion batteries

Synthesis (chemical)

Temperature

Anode material

Conversion reactions

CUCO2S4

CUCO2S4/C

Electrochemical reactions

Hydrothermal methods

LITHIUM BATTERY APPLICATIONS

LOW TEMPERATURE HYDROTHERMAL ROUTES

SULFUR COMPOUNDS

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Applied Surface Science

The need to identify lithium ion battery anodes consisting of new materials that display high energy density and good cycling stability has interested the research on reversible so-called conversion reaction between lithium and molybdenum oxides such as ternary metal oxide (Li2Mo4O13). Polycrystalline Li2Mo4O13 was synthesized by conventional solid-state reaction route and explored as new potential anode material for secondary lithium ion battery applications vs. Li+/Li in half-cell mode. The electrochemical performance of the Li2Mo4O13 electrode was studied by cyclic voltammograms and galvanostatic discharge-charge cycling under different rates. In the working voltage between 2.5 V and 0.1 V, Li2Mo4O13 shows a high first charge capacity of 1062 mAh g−1 at current rate of C/10 (24 Li react with 10 h) and a superior rate capability with capacity retention of 1008, 842, 713 and 640 mAh g−1 under current rates of C/10, C/5, C/3 and C/2 (24Li react with in 2 h), respectively. Further, the cycling performance was evaluated at C/3 rate (424 mA g−1) and after 100 cycles a reversible capacity of 550 mAh g−1 was obtained with columbic efficiency of ∼100%. Ex-situ XRD studies confirmed that the electrochemical reaction involves insertion of 5Li/f.u vs. Li+/Li during discharge to 1.3 V and the crystal structure was retained when charged to 2.5 V. Below 0.8 V, conversion reaction occurs leading to amorphization of the phase. When discharged to 0.1 V, Mo+6 is reduced to Mo0 state on the basis of the conversion reaction. © 2017 Elsevier Ltd

Electrochimica Acta

Ternary lithium molybdenum oxide, Li2Mo4O13: A new potential anode material for high-performance rechargeable lithium-ion batteries

Na2Mo2O7 was synthesized by solid-state reaction route and explored as possible anode material for sodium ion battery for the first time. The electrochemical reaction with sodium involves an initial insertion of 0.33&nbsp;Na/f.u into the lattice followed by conversion reaction. The material shows good reversibility and high rate capability. A reversible capacity of ∼200&nbsp;mAh&nbsp;g−1 is obtained after 50&nbsp;cycles. The presence of lattice sodium facilitates reversible sodiation/de-sodiation. © 2016, Springer-Verlag Berlin Heidelberg.

Journal of Solid State Electrochemistry

Disodium dimolybdate: a potential high-performance anode material for rechargeable sodium ion battery applications

Na2Mo2O7 was synthesized by sol-gel route and tested as anode material for Li-ion battery applications vs. Li+/Li in half-cell mode for the first time. The first cycle discharge and charge capacities are 1348 mAh g−1 and 937 mAh g−1, respectively at 321 mA g−1. The electrochemical reaction during first discharge involves insertion of Li into the crystal structure followed by conversion reaction with associated amorphization of the phase. The material shows excellent capacity retention and rate capability. Even after 50 cycles, a capacity of 470 mAh g−1 was observed at a high current density of 800 mA g−1. The nanocrystalline Na2Mo2O7 reported in this study exhibited highest capacity among the Mo based oxides. © 2016 Elsevier Ltd

Nanocrystalline Na2Mo2O7: A New High Performance Anode Material

ACS Applied Materials & Interfaces

In Situ Fabrication of CoS and NiS Nanomaterials Anchored on Reduced Graphene Oxide for Reversible Lithium Storage

Small

Conversion Reaction-Based Oxide Nanomaterials for Lithium Ion Battery Anodes

Journal of Power Sources

Synthesis of sub-10 nm copper sulphide rods as high-performance anode for long-cycle life Li-ion batteries

In-situ carbon coated CuCo 2 S 4 anode material for Li-ion battery applications

Journal	Data powered by TypesetApplied Surface Science
Publisher	Data powered by TypesetElsevier B.V.
ISSN	01694332
Open Access	No